Installation Instructions for HMI HOYME Adaptor 0MV2 Interlocks ...

Installation Instructions for HMI HOYME Adaptor 0MV2-S5AInterlocks 24Vac Combustion Air Control Damper To 250mVdc-100 Vdc Safety Control CircuitsINSTALLATION OF THIS ADAPTOR SHALL BEIN ACCORDANCE WITH THE REQUIREMENTSOF THE AUTHORITIES HAVING JURISDICTION.Refer also to HMI HOYME Installation Instructions:‘Combustion Air Control Damper, Series HOM.’ADP-OMV2-S5A4” x 5” x 2 1/2”101 x 127 x 64 mmThis Adaptor comes with two relays and aprinted circuit which senses a 250 mVdc/100Vdc safety control circuit, opens a 24Vacdamper and then signals back to the safetycircuit for firing. For line voltage AC safetycontrol circuits, use Adaptor ADP-1102-S5A.I.D.: ADP-0MV2-S5A Includes:-Test/Run Switch,-Printed Circuit Board with Relays-Main Coil 24Vac. Points 24Vac/5Amps.- For one appliance, use one Adaptor andone Damper, Series HOM, Type – SF1.- For two appliances, use two Adaptors andone Damper, Series HOM, Type SF1.- Adaptor is to be mounted as close aspossible to 250 mVdc/100Vdc gas valve.- Additional wire shall not be spliced to theRED, BLACK or WHITE leads.- Use an approved 24Vac transformer ofadequate capacity (10 VA min.)- Supply for the primary of the transformershall be taken from the line voltage supplyfor the appliance. Follow applicable codes.-Always conduct a thorough check-out afterinstallation is complete.-Affix attached wiring diagram label adjacentto appliance wiring diagram label.Note: Numbers 1 to 6 includes interconnectingthe Adaptor to the Damper.1.Turn temperature control to lowest setting.2. Turn off electric power. Add a 24Vactransformer to power the damper closed.(See # 4) Follow applicable Codes.3. Connect damper wires BLACK (1), RED(2), BROWN (3) to Adaptor terminals 1, 2and 3 respectively. Note: Connect damperwire BLUE (5) to Adaptor terminal 4.4. Connect 24Vac transformer wires toAdaptor terminals 3 and 5.5. Turn on electric power to transformer.Damper will close.Note: ‘TEST/RUN’ manual switches on thedamper and adaptor are to be in the ‘RUN’position.6. Test for common ground by touchingWHITE Adaptor lead to base of gas valve. Ifsparking occurs, interchange transformerwires on Adaptor terminals 3 and 5.Note: Numbers 7 to 11 includes interconnectingthe Adaptor to the power pile ofa mVdc circuit.Note: Pilot light to remain burning.Adaptor leads BLACK and WHITE must beproperly matched to the dc polarity of thepower pile with the Pilot light burning.7. Test by touching Adaptor WHITE lead tothermopile wire on terminal (PP) on Coil sideof the gas valve while touching AdaptorBLACK lead to remaining thermopile wire.Damper should now open. If no response,exchange Adaptor leads and retest.1212-ch 1 Printed in Canada

8. Connect this WHITE ‘lead/thermopile’wires to (PP) terminal on coil side of the gasvalve. (This might require inter-changingthermopile wires for proper polarity of DCcurrent and relight pilot if necessary.)9. Disconnect temperature control wireleading to the TH terminal on gas valve coiland replace with the Adaptor RED wire.10. Rejoin the temperature control wire tothe Adaptor BLACK lead with a screw-onwire connector.11. Turn temperature control to call for heat.Damper will open and heating appliance willoperate normally.Note: Numbers 12 to 17 includes interconnectingthe Adaptor to dc circuits otherthan the mVdc.17. Turn on the power. Turn temperaturecontrol to call for heat. Damper will open andheating appliance will operate normally.ON DC CIRCUITS OTHER THAN mVdccircuits, the BLACK and WHITE leads shallalso be matched to the dc polarity of thesafety circuit.CAUTION: Adaptor leads BLACK, REDand WHITE are to be connected to the250mVdc-100Vdc safety circuit only.SCHEMATIC WIRING DIAGRAM FORCOMBUSTION AIR CONTROL DAMPERINTERLOCKED TO MILLIVOLT SAFETYCONTROL CIRCUIT USING ADAPTOR ‘0MV2’.SAFETY NOTE:Higher voltage requires EXTRA CAUTION.12. Adaptor leads BLACK and WHITE mustbe properly matched to the dc polarity of thesafety circuit.13. Test by touching Adaptor WHITE andBLACK wires to the dc source leading to thegas valve. If damper does not open, reversethe Black and WHITE leads and the damperwill open. Note this polarity combination.SAFETY NOTE: With voltages other thanmVdc, turn the supply power off.14. Connect the WHITE lead wire to the gasvalve as per polarity combination found in 7.15. On the other side of the gas valvedisconnect the dc wire and replace it withthe Adaptor RED wire.16. To the wire removed in #9 connect theAdaptor BLACK wire with the wire nutsupplied.Note: This marking is also on label to beaffixed adjacent to appliance wiring diagram.Additional wire shall be of the same size andtype as originally used when completing theabove circuit.1212-ch 2 Printed in CanadaFor more information, please contact HMI HOYME Manufacturing Inc. @ 1-800-661-7382www.hoyme.com